Re: Elk River, TN
There is a book that is a fairly basic overview of Tennessee fly fishing broken down by type of water: Tailwaters, Taliwater Lakes, Freestone Streams & Rivers. A quick glance at the opening spread on pages 6-7 shows 4 tailwater streams within easy reach of Nashville. There's Caney Fork, Duck River, Elk River and Obey River. Each of these is given a fairly comprehensive write-up. While I've not fished any of these, I have fished a number of the other streams written up in the book and I've found his appraisal helpful. Nice color photography too. Makes everything look very inviting!.
Hope this is helpful
"I've since learned to use the best knot rather than the one that uses the least line. I go through more tippet material but compensate by drinking cheaper whiskey. One must have priorities." ... Art Scheck